Railway car truck



Feb. 3, 1942.

R. B. COTTRELL RAILWAY CAR TRUCK Filed Jan. l5, 1940 l@ UU 26@ INV ENTOR.

ATTORNEY.

Patented Feb.v3, 1942r n 272,035 Y e l e RAnwAYoAR 'muon 'Mitchel-tk B1 Cottrell, chiarire', u1., fassigor," 'to l 1 Alnercan Steel Foundries, Chicago, Ill., a cor-4 l v poration of New Jersey Application January 13, 1

946, fs'riifNoi 313,724

' vMy invention `relates'"to quick wheel change .trucks and more particularly tomethods of p1'e" venting accidental dismantling Aofiquick Wheel change trucksof the type disclosed in my United States Letters Patents 2,188,641 and 2,220,218, issuedon January 30, 1940 and November 5, 1940,` respectively.

v The general object of V"rn'yinvention is to pre- I a novel methodof preventing accidental disengagement of thebolsterfrom the yside frame of such a truck. k

`A different object of my invention is lto prevent looseness and `rattling between the bolster column inserts yand the bolster.I

My invention further contemplates `safetyjarrangements for such a quick Wheel changetruck as will meetall of Lthe manufacturing require; ments and vservice conditions normally'contem plated -in railwayv freight car;trucks.` k

Figure 1 isa fragmentary side elevation o f a truck embodying a diiferent modiiication of my` taken substantially invgthe .Vertical longitudinal plane bisecting the'side frame. l r o n Figure 2 is afragmentary top plan view or" the structure shown in Figure 1. 't` 'n Figure 3y is, a fragmentary end view of abolster and insert 'showinga different'modification'ofv my invention, one-half Abeing shown section; the section beingtaken substantially in the vertical plane indicated by line 3-3 of Figure 4.

y .Figure 4 is a' fragmentary top plan view of the structure shown in Figure` 3. n

Figure 5 is a fragmentary end View of a bolster and insert showing a different modification of my invention, only one-half of the;bolster end being shown inasmuch asthe other half is similarly arranged, and Figure 6 is a fragmentary sectional VView of themodication shown in Figure 5, said section being taken substantially in the `horizontal plane indicated by line 6-6 of Figure 5.

n invention, partlyin section,='said section being jOne :'methotd'byfwhichfIi may prevent acci-A dental dismantlingv ofzthe'rbolster and side frame .is to..r secure the .insert-or Ainserts to the bolster insuch-manner thatthe` bolster .and insert will actas a unit.v Whenthe bolster is'raised toits uppermost position Where it .is Hout ofengagement .with said' flangesgztheinsert, acting "as a unit with Asaid bolster, Vretains its engagement n 'with said flanges `andthus prevents accidental l0 disengagement Vof the .bolster and side frame. Variousi modifications.illustrating thisA method are` shown kin Figures 1 to 8. f

In Figure 1 isshown .afragmentary portion of a well-known type of .truckincluding a truss side n frame with the compression member 4, the tension memberi, and the integral column I0 forming therewith ,anv Aopening' through which mayv project 'the end` of the bolster I2. Centrally formed spaced lugsv `50,5,5IJ'on thev insert member 5| project upwardlywthrough the lrectangular opening-52 'in the botto'mfwall'of the bolster l2 and receive therebetweenfthe .bol-ster center reinforcing rib 2li. Aligned r'holes in said lugs and said rib receive a nut andfbolt assembly 53 which secures said insert to saidbolsten v f' I-n Figures and 4, a' centrally formed boss 54 on theinsert member E5-'projects upwardly through an opening 5,6m thejbottom wall of the bolster'andintofthe relieved portion" 58 in the center rib 26; Afdiagonal opening may be formed adjacent thetop ofi saidbos'sfin whicha pin' may be insertedtlflusv 'securing ysaid Vinsert to saidf bolster; "Inthe'modication'shown in Figures 5 and 6, a substantiallyrectangular1shaped ribSUjoining the upstanding .end portion 6l and thebase of" the in-sertmember maybe formed inplace v10 formed on the insert 1| projects upwardly Figure '1 is a'fragmentary end view of a bolsterv and insert showing` a different modiiication of f my invention, only one-half. of the bolster end vbeing shown inasmuch as .the other half is 'simure 7. Y

through arectangular opening y12in the bottom wall of the bolster. rThe opening 14 formed by said strap extends above the: top lsurface of the bottom wall of the bolster so that a resilient member 16` .having a shallow recess 11 on its -upper surface may be inserted in the opening saidlrstrrap and prevents separation of the insert y and the bolster.

It is to be understood that I do not Wish to be limited by the exact embodiments of the device a' shown which are merely by Way of illustration and not limitation asvarlous and other forms of the device will, of course, be apparent to those skilled in the art without departing from the spirit of the invention or the scope of the claims.

I claim:

1. In a quick wheel change truck, a truss side frame having a top member, a bottom member and spaced columns dening therebetween a bolster opening, guide means on said columns, a spring seat on said bottom member beneath said opening, resilient meansseated thereon, interlocking means positioned on said resilient means and having engagement with said guide means, a bolster end seated on said interlocking means and having widened portions engaging Sad guide means, whereby said bolster end. and said interlocking means cooperate as a unit with said guide means, said guide means being spaced from said top member a distance approximately equal to the depth of said widened portion, whereby said bolster may be raised and disengaged from said guide means while said interlocking means remains in normal operative position in engagement with said guide means, and means including a central boss on said interlocking means for securing said interlocking means to said bolster so that when said bolster disengages with said guide means the engagement of said interlocking means with said guide means prevents accidental disengagement of said bolster and side frame;

2. In a quick wheel change truck, a truss side frame having a top member, a bottom member and spaced columns forming therebetween a bolster opening, guide means on said columns, a spring seat on said bottom member beneath said opening, resilient means seated thereon, interlocking means positioned on said resilient means and cooperating with said guide means, a bolster end seated on said interlocking means v'and vengaging said guide means, whereby said interlocking means and said bolster end cooperate as a unit with said guide means, said guide means being spaced from said top member a distance such that said bolster end may be raised and disengaged from said side frame while said interlocking means remains in normal operative position in engagement with said guide means, andsafety means cooperating with said bolster end and said interlocking means to prevent accidental dismantling of said bolster end and said'side frame when said bolster is raised to its maximum vertical position, said safety means comprising a boss centrally located on said interlocking means and extending through the bottom wall of .said bolster end for securement therewith'. l l

3. In a four wheel truck, a side frame having a top member, a bottom member, and spaced column guides defining a bolster opening, a bolster end with a central reinforcing rib projecting through said opening and having approximately the top half thereof widened to form lateral shelves, guide flanges on said columns, channels on said widened portions having engagement with said guide flanges, and an interlocking member having its ends seated against said shelves and lpresenting channels in alignment with said be- 'forementioned channels and also having engagev ment with said flanges, said guide iianges being spaced from the tops of said columns a distance approximately equal to the depth of said shelves whereby said bolster end may-be elevated from said interlocking member and disengaged from said guide flanges while said interlocking member remains in normal operating position, and a central upstanding boss on said interlocking member projecting within said bolster end into a relieved portion of said central rib and adapted to receive means securing said interlocking member to said bolster for preventing accidental dismantling of said bolster and side frame when said bolster disengages from said guide flanges.

4. In a four Wheel truck, a side frame having a top member, a bottom member, and spaced column guides dening a bolster opening, a bolster end with a central vertical rib projecting through said opening and having approximately the top half thereof widened to form lateral sh'elves, guide flanges on said columns, channels on said widened portions having engagement with said guide iianges and an interlocking member having its ends seated against said shelves andl presenting channels in alignment with said before-mentioned channels and also having engagement with said flanges, said guide an'ges being spaced from the tops of said columns a distance approximately equal to the depth of said shelves whereby said bolster end may be elevated from said interlocking member and disengaged from saidfguide flanges while said interlocking member Aremains in normal operating position, and a central member on said interlocking memberV projecting through the bottom wall of said bolster, accommodated within a relieved portion in said central rib, and adapted to receive means securing said interlocking member to said bolster end whereby accidental dismantling of said bolster and side frame is prevented when said bolsterjdisengages from said guide flanges,

' i ROBERT B. COT-TRENI. 

